Missouri 2005 Corn Performance Tests
Southwest Region Crop Management Summary

There are two locations in the southwestern region of Missouri for irrigated corn tests. They are located in counties where a significant number of acres of irrigated corn are grown according to the Missouri Agricultural Statistics Service. Cultural practices vary from location to location, but tend to reflect those followed by farmers in the area.

Planting dates were April 5 for Harrisonville and April 4 for Lamar with soil conditions being very good at both locations at planting. The crop at Harrisonville developed normally and produced good yields but the irrigation system at Lamar broke down mid-season limiting crop development and yield.

Climatological information for the growing season for Southwest Missouri (April 1 – August 31) is summarized below.

Average temperature = 71.5 degrees, 1.9 degrees above normal
Average precipitation = 20.1”, 2.5” below normal
Growing degree days = 3318 days, 120 days above normal

Southwest Region Crop Management Summary
	Planting	Harvest	Fertilizer
Location	date	date	N	P2O5	K2O
Irrigated Corn Tests
Harrisonville	04-05	09-06	220	80	120
Lamar	04-04	09-22	221	105	28

Southwest Region Crop Management Summary continued...
		Herbicide
Location	Tillage	Pre	Post	Insecticide
Irrigated Corn Tests
Harrisonville	Conv.	Dual II Magnum, Atrazine, Callisto	None	Force 3G
Lamar	Conv.	Dual II Magnum, Princep, Atrazine	Callisto	Force 3G